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https://issues.apache.org/jira/browse/HDFS-2667?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Todd Lipcon updated HDFS-2667:
------------------------------
Attachment: hdfs-2667.txt
Attached patch fixes the issues and adds unit tests for repeated manual
failover and fail-back between two NNs. Both new test cases failed without the
bug fixes.
This applies on top of HDFS-2602 and HDFS-1972 though I think only 2602 is
necessary.
> HA: Fix NN Active->Standby transition
> -------------------------------------
>
> Key: HDFS-2667
> URL: https://issues.apache.org/jira/browse/HDFS-2667
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: ha, name-node
> Affects Versions: HA branch (HDFS-1623)
> Reporter: Todd Lipcon
> Assignee: Todd Lipcon
> Attachments: hdfs-2667.txt
>
>
> Currently when the active transitions to standby (eg for a manual failover)
> the EditLogTailer starts tailing edits at the wrong transaction ID. This
> causes it to double-apply a bunch of edits, which causes various problems. We
> need to add a test which checks this state transition and fix any related
> bugs.
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